Deep Sclerectomy with Goniosynechiolysis Ab Interno for Chronic Glaucoma Associated with Peripheral Anterior Synechiae.

Purpose. To report one-year results of phacoemulsification combined with deep sclerectomy and goniosynechiolysis ab interno for chronic glaucoma associated with peripheral anterior synechiae (PAS). Methods.

[Practical significance of critical fusion frequency (CFF). Chronological resolution of the visual system in differential diagnosis].

The value of measuring the critical fusion frequency (CFF) as part of ophthalmological diagnostics is examined. The relevant literature on changes of the CFF concomitant with refraction errors, media opacity, age-related macular degeneration, glaucoma and various other opticopathies is discussed regarding the relevance of CFF for the differential diagnosis. Various methods and instruments for measuring the CFF are presented.